问题描述
我有一个配置为使用多 (2) 个实例的 Azure 网站:
I have an Azure Web Site configured to use multiple (2) instances:
我有一个应该在实例之间传递消息(即缓存驱逐)的服务总线.我需要测试这个机制.
I have a service bus that should pass messages (ie Cache Evict) between the instances. I need to test this mechanism.
在传统(本地)系统中，我会将浏览器指向实例 1(即 http://myserver1.example.com)，执行一个操作，然后将我的浏览器指向另一个实例(http://myserver2.example.com) 进行测试.
In a conventional (on premise) system I would point a browser to instance 1 (ie http://myserver1.example.com), perform an action, then point my browser to the other instance (http://myserver2.example.com) to test.
但是，在 Azure 中，我看不到访问特定实例的方法.是否可以?或者是否有另一种方法来运行此测试场景(对实例 1 采取行动，确保实例 2 行为正常)?
However, in Azure I can't see a way to hit a specific instance. Is it possible? Or is there an alternative way to to run through this test scenario (act on instance 1, ensure instance 2 behaves appropriately)?
推荐答案
不幸的是，没有官方的方法来做到这一点.但是，您可以通过在请求中设置一个名为 ARRAffinity 的 cookie 来实现.
Unfortunately, there isn't an official way of doing this. However, you can achieve that by setting a cookie called ARRAffinity on your request.
尝试从任何客户端(Chrome、Firefox、curl、httpie 等)访问您的站点并检查您返回的响应标头.
Try hitting your site from any client (Chrome, Firefox, curl, httpie, etc) and inspect the response headers that you are getting back.
例如在 curl 你会这样做
curl -I <siteName>.azurewebsites.net
你会得到这个
HTTP/1.1 200 OK
Content-Length: 2
Content-Type: text/html
Last-Modified: Wed, 17 Sep 2014 16:57:26 GMT
Accept-Ranges: bytes
ETag: "2ba0757598d2cf1:0"
Server: Microsoft-IIS/8.0
X-Powered-By: ASP.NET
Set-Cookie: ARRAffinity=<very long hash>; Path=/;Domain=<siteName>.azurewebsites.net
Date: Fri, 28 Nov 2014 03:13:07 GMT
您感兴趣的是 ARRAFinity 如果您发送几个请求，您会注意到哈希将在代表您的 2 个实例的 2 个值之间不断变化.
what you are interested in is the ARRAFinity if you send couple of request you would notice that hash will keep changing between 2 values that represent your 2 instances.
在您的请求的 Cookie 标头中设置它会保证它转到其中一个实例而不是另一个实例.
Set that in your Cookie header on your request will guarantee it going to one of the instances and not the other.
curl --cookie ARRAfinity=<one of the hashes you got> <siteName>.azurewebsites.net
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